topscore QR question

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TimeforDAT

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#17 QR of Test 1 in topscore

4csc^2 - 1 = 0,

then u end up with csc^2 = 1/4, then square root it to make it

csc = 1/4..someone please explain why csc is never +/- 1/2
 
#17 QR of Test 1 in topscore

4csc^2 - 1 = 0,

then u end up with csc^2 = 1/4, then square root it to make it

csc = 1/4..someone please explain why csc is never +/- 1/2

csc = 1/sin

Which means 1/sin = 1/2

Which means sin x = 2 but sin is bounded by -1 and 1 so it can never = 2.
 
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